Current-rectifier.



W. F. WARNER.

CURRENT RECTIFIER. APPLICATION mm JAN.20. 1916.

1,206,061. Patented Nov. 28, 1916.

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WILLIAM F. WARNER, OF DAVENPORT, IOWA.

CURRENT-RECTIFIER.

Application filed January 20, 1916.

To all whom it may concern:

Be it known that 1, WILLIAM F. WARNER,

a citizen of the United States, residing at Davenport, in the county of Scott and State of Iowa, have invented certain new and use ful Improvements in Current-Rectifiers, of which the following is a specification.

My invention relates to improvements in current rectifiers and has especial reference to devices of this character of the electrolytic type.

@ne of the objects of my invention is to provide an improved portable rectifier for an especially low voltage alternating current, such, for instance, as that provided by the ignition magnetos of Ford cars, whereby to transform an alternating current into a periodic direct current which may advantageously be used for charging storage batteries, or for other like purposes.

Another object of my invention is to simplify and cheapen the construction of such cells and to provide means to prevent the liquid content from escaping, thereby soiling or otherwise injuring surrounding objects, and rendering the cell especially well adapted for automobile use. @ther and further objects of my invention will become readily apparent, to persons skilled in the art, from a consideration of the following description when taken in conjunction with the drawings, wherein Figure 1 is a plan view of my cell. Fig. 2 is a central, vertical section, taken on line 2-2 of Fig. 1. Fig. 3 is a similar section, taken on line 3-3 of Fig. 1. Fig. 1 is a transverse section, taken on line let of Fig. 2.

Tn all the views the same reference characters are. employed to indicate similar parts.

The containing cell or case 5 may be made of galvanized steel, iron or other suitable sheet metal. It is preferably provided with a depressed top or cover 6 which is supported about an inch to an inch and a half below the upper salient edge or end 7 of the case. The top circumferential edge of the cover is beaded over, as at 8, and overlies the top salient edge 9 of the cell, and serves as a means for providing a smooth edge 10 and for supporting the top wall of the cover 6 in position. The beading 8 of the cover 6 not only reinforces the upper edge of the cell but prevents exposure of the sharp cut- Specification of Letters ratent.

Patented Nov. 25%, 1916.

Serial No. 73,108.

ting edge, in contact with which persons handling the cell may become injured. The cover 6 is fixed to the case and is provided with a large central opening 11 through which the electrodes may be passed into the cell below.

The cylindrical electrode 12 is preferably composed of lead and near its upper end it is provided with twolaterally extending screw threaded ears 13 and 1%, by which to attach it to an insulating supporting disk 15, which normally rests upon the cover 6. A screw 16, which affords the wire binding terminal connection for the cylindrical electrode 12, passes through the insulating disk 15, which may be made of slate, marble or the like, into the threaded car 13, and a similar screw 17 passes through the insulating plate or disk into the other ear, thus firmly holding the cylinder in contact with the disk and supporting it in the electrolyte 18 above the bottom of the cell 5. The cylinder 12 is provided, near its top end with openings 1919 to permit the evolved gas to pass out from between it and the central electrode 20. The gas evolved by the electrolytic action will pass from the interior of the cylinder into the open space above the electrolyte in the cell and from thence through the vent 21 in the closure 22. Closure 22 is a screw cap adapted to tightly over a complementary threaded cylindrical projecton from the cover 6. By making the vent in the top of the screw cap, the escape of the gas will be above any liquid that may be contained within the space above the cover 6 and thereby prevent the escaping gas from spraying the liquid over surrounding objects.

The central electrode or rod may be of aluminum or other similar and suitable ma terial. The upper end of the central electrode 20 is screwthreaded to a binding screw 23. The screws 16 and 23 are held inc-on: tact with the plate 15 by check nut 24 end the binding nuts 25 are the means by which the conducting wires 26 are held in contact with the respective screws.

Screws 27 take through the insulating disk 15 and are held in place by the check nuts 28, and serve as means for preventing shifting of the disk 15 for holding it firmly in contact with the cover 6.

Any suitable liquid may be employed in the cell and electrodes 12 and 20 may be made of other material than lead and aluminum, respectively, such as may be suitable for the electrolyte or liquid employed.

In connecting the cell with a Ford magneto or other source of alternating current and with a battery to be charged, it is placed in series With the battery, so that every alternate impulse will be permitted to pass through the battery, whereby the battery may thus be charged by a series of direct current impulsesalways in the same or constant direction from a source of current supply producing a substantially direct current.

Having described my invention, What I claim is 1. A current rectifying cell comprising a sheet-metal containing case; a disk of insulating material; electrodes depending into the case, carried by said disk, and a cover, for the case, depressed below the top edge thereof sufliciently to contain said disk, and having its peripheral edge beaded over the salient edge of the case to support the cover, reinforce the Wall of the case and to provide a smooth contacting surface overlying the upper edge thereof.

2. A current rectifying cell comprising a sheet-metal containing case; a disk of insulating material of less diameter than the case; a cylindrical electrode and a rod electrode therein, suspended from the disk, said cylinder having vent openings near the disk;

a cover, for the case, depressed below the top WILLIAM F. WARNER.

In the presence of A. F. SANDER, It. W. GOULD. 

